Selective Amnesia

A shameless plug to increase commentage

All the meanings of the word Plug.
1. [n] an old or over-worked horse;
2. [n] an upright hydrant for drawing water to use in fighting a fire;
3. [n] blockage consisting of an object designed to fill a hole tightly;
4. [n] an electrical device with two or three pins that is inserted in a socket to make an electrical connection;
5. [n] electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark;
6. [n] blatant or sensational promotion;
7. [n] a wad of something chewable as tobacco;
8. [v] persist in working hard;
9. [v] make a plug for; praise the qualities or in order to sell or promote;
10. [v] deliver a punch to;
11. [v] fill or close tightly with or as if with a plug
12. [n] in breech-loading guns, the metal plug or cylinder which closes the aperture in the breech, through which the gun is loaded.
13. [n] A high, tapering silk hat. [Slang, U.S.]
14. [n] A stopple.

From Hyperdictionary.com, Merriam Webster and from my trusted Oxford at home.